Scripting Kronos on Firefox using Loadrunner

Hi All,

I am working on performance testing of Kronos Workforce Central. The application is accessible only using Firefox 26 browser. The current version of Loadrunner that we are using is 11. When I try to do the recording, the application homepage loads, but on providing credentials and hitting the login an error is displayed. It reads as "System error" and at the bottom , there is a red cross symbol with Null written next to it. (Please refer to the screenshot)

Have any of you encountered this kind of error? What could be the cause?

Any help would be much appreciated.

Thanks and regards,

Seema